Oil companies have not built a new refinery for close to 50 years, so if it’s due to government discouragement then it went on through Republican and Democrat administrations. And the decision to close existing refineries were corporate decisions.
We were energy independent under Trump. Biden attacked fossils fuels. Biden closed down construction on phase 4, cancelled drilling permits on federal land and set more strict guidelines on oil refineries closing 5 in 2021 and 1 in 2022. Biden caused high fuel cost and inflation.